Observation of Overlapping Spin-1 and Spin-3 D[overbar][superscript 0]K[superscript -] Resonances at Mass 2.86 GeV/c[superscript 2]
Name
PhysRevLett.113.162001.pdf
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Author(s)
LHCb collaboration
Counts, Ian Thomas Hunt
Ilten, Philip J
Williams, Michael
Alternative Title
Observation of Overlapping Spin-1 and Spin-3 D¯0K− Resonances at Mass 2.86 GeV/c2
Date Issued
October 2014
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Aaij. R. et al. (LHCb Collaboration) "Observation of Overlapping Spin-1 and Spin-3 D[overbar][superscript 0]K[superscript -] Resonances at Mass 2.86 GeV/c[superscript 2]." Phys. Rev. Lett. 113, 162001.
Version
Final published version
Abstract
The resonant substructure of B_{s}^{0}→D[over ¯]^{0}K^{-}π^{+} decays is studied using a data sample corresponding to an integrated luminosity of 3.0 fb^{-1} of pp collision data recorded by the LHCb detector. An excess at m(D[over ¯]^{0}K^{-})≈2.86 GeV/c^{2} is found to be an admixture of spin-1 and spin-3 resonances. Therefore, the D_{sJ}^{*}(2860)^{-} state previously observed in inclusive e^{+}e^{-}→D[over ¯]^{0}K^{-}X and pp→D[over ¯]^{0}K^{-}X processes consists of at least two particles. This is the first observation of a heavy flavored spin-3 resonance, and the first time that any spin-3 particle has been seen to be produced in B decays. The masses and widths of the new states and of the D_{s2}^{*}(2573)^{-} meson are measured, giving the most precise determinations to date.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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DOI of Published Version
https://doi.org/10.1103/PhysRevLett.113.162001
